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Am J Kidney Dis. 1993 Apr;21(4):378-82.

A race-controlled human leukocyte antigen frequency analysis in lupus nephritis. The South-Eastern Organ Procurement Foundation.

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Department of Medicine, Bowman Gray School of Medicine of Wake Forest University, Winston-Salem, NC 27157-1053.


Systemic lupus erythematosus (SLE) has higher incidence and mortality rates in addition to a greater risk for nephropathy in African Americans (blacks), compared with whites. We analyzed the South-Eastern Organ Procurement Foundation (SEOPF) database from 1982 through 1986 to determine if variation in human leukocyte antigen (HLA) frequencies, beyond those normally present between the races, were associated with lupus nephritis (LN). HLA antigen frequencies in 271 black and 230 white renal transplant recipients with LN as the cause of end-stage renal disease (ESRD) were compared with 4,506 race-matched cadaveric kidney donor controls. Odds ratios (ORs) and chi-square values were computed to assess the prevalence of each HLA phenotype among the cases versus the controls separately for blacks and whites. HLA-B8 and -DR2 frequencies were increased, and HLA-DR4 frequency was decreased in cases of both races compared with race-matched controls (race-combined ORs, 1.68, 1.46, and 0.49, respectively; all P < 0.01). Race-specific analyses showed that HLA-DR6 was decreased in black cases versus black controls (OR, 0.48; P < 0.001) and HLA-DR3 was increased in white cases versus white controls (OR, 1.88; P < 0.001). HLA-B8 and DR2 are positively associated and HLA-DR4 is negatively associated with LN in patients of both races. HLA-DR3 and -DR6 demonstrate race-specificity in LN and place whites at a disadvantage relative to blacks. It is likely that non-HLA-mediated genetic factors and/or environmental factors contribute to the increased risk of nephritis observed in black patients with SLE.(ABSTRACT TRUNCATED AT 250 WORDS).

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